[Help-gsl] GSL Matrix from preexisting data

[Mathias Wagner]

Hi,

I would like to use GSL's LU Decomposition. The data are storred in A Blitz++ 
(http://www.oonumerics.org/blitz/)  Array. I can get access the data in a 
one-dimensional C-Array (via the .data() function)
Is there a way to create a GSL Matrix from a one-dimensional C-Array ?

Is there are easy way to calculate A X = B with A,B and X are matrices?

Mathias